I have giant brass dampers on my 6SN7s for my preamp. Got them from Andy at VTS. I haven't seen them on his Web site for a while, however.
I won't use the preamp without them. They give amazing heft to the image, and clarity in the low end.
I'm using Herbies on my 12au7 and 12ax7 signal tubes in the power amp. Not as dramatic a change as the preamp tube dampers, but I haven't taken them out yet.
I recall a small brass version from Andy for the signal tubes but haven't seen them either.
I won't use the preamp without them. They give amazing heft to the image, and clarity in the low end.
I'm using Herbies on my 12au7 and 12ax7 signal tubes in the power amp. Not as dramatic a change as the preamp tube dampers, but I haven't taken them out yet.
I recall a small brass version from Andy for the signal tubes but haven't seen them either.